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Super-resolution Fluorescence Microscopy

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...

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Updated: Mar 12, 2026

Single Molecule Fluorescence Microscopy on Planar Supported Bilayers

Single Molecule Fluorescence Microscopy on Planar Supported Bilayers

Published on: October 31, 2015

Microfiber-microcavity system for efficient single photon collection.

Chang-Min Lee, Hee-Jin Lim, Mireu Lee

|November 10, 2016

Summary

This summary is machine-generated.

Bright fiber-coupled single photon sources using InAs quantum dots were developed. This breakthrough achieves 58% fiber coupling efficiency, advancing quantum information processing.

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Area of Science:

Quantum Information Science
Materials Science
Optics and Photonics

Background:

Single photon sources are crucial for quantum information processing.
High brightness and efficient fiber coupling are essential for practical quantum applications.

Purpose of the Study:

To demonstrate bright, fiber-coupled single photon sources based on InAs quantum dots.
To achieve efficient coupling of single photons into optical fibers for quantum technologies.

Main Methods:

Utilized k-vector matching between a microfiber mode and a linear photonic crystal cavity mode.
Employed InAs quantum dots as the single photon emitters.
Performed transmission measurements for coupling efficiency and time-resolved photoluminescence for Purcell enhancement.

Main Results:

Achieved a direct fiber coupling efficiency of 58%.
Obtained a raw count rate of 1.81 MHz with g(2)(0) = 0.46 under non-resonant pumping.
Confirmed three-fold Purcell enhancement through time-resolved photoluminescence.

Conclusions:

The developed InAs quantum dot system offers a promising route for efficient direct fiber collection of single photons.
This advancement is significant for the development of practical quantum information processing systems.
Further improvements in g(2)(0) are expected with resonant pumping.